Rocks & Minerals-3rd grade

Photos courtesy of Google Images

A person who studies the planet earth is called a….

geologist

The study of earth materials is called….

…means a material like salt or alum disappears in water when it is stirred.

This sugar is _____________ in the water.dissolving

Water disappears into the air.

When water evaporates from a solution of salt andwater, only salt crystals will be left behind.

When water disappears into the air, it is called…….

These are……

Rocks have properties. Properties are characteristics thatcan be observed and described.

To look at

To tell about

Rocks have the following properties:

Color: describe the color

Texture: how it feels

Size: how big or small it is

Luster: shiny or dull?

Hardness: Need to complete the scratch test todetermine if it is hard or soft.

Color:

Texture:

Size:

Luster:

Hardness:

Light brown

shiny

(since I can’t feel it, I’m guessing smooth with sharp edges.

Small like a ping-pong ball

I can’t scratch it, but I’m guessinghard.

What properties might a geologist use to describe this rock?

What properties might a geologist use to describe

these rocks? Color:

Texture:

Size:

Luster:

Hardness:

Charcoal gray

dull

(since I can’t feel it, I’m guessing smooth with sharp edges.

Large boulders

I can’t scratch it, but I’m guessinghard.

Earth material composed of different minerals is a…..

A rock ingredient that can NOT be broken down into smaller pieces is called a …….

Fiery rocks made from lava.

Rocks changed from wind, pressure or chemicals

Sand, pebbles and bits of shells that sit untouched and form into layers.

Sedimentary, Metamorphic or Igneous?

Sedimentary, Metamorphic or Igneous?

Sedimentary, Metamorphic or Igneous?

Sedimentary, Metamorphic or Igneous?

Sedimentary, Metamorphic or Igneous?

Sedimentary, Metamorphic or Igneous?

Pebble, rock or boulder?

pebbles rocksboulders

These are all……

When measuring rocks, geologists use these terms:

Circumeference: distance around an object

Diameter: distance across circular object

Depth: how thick an object is

When measuring rocks, geologists use these terms:

Circumeference: distance around an object

Diameter: distance across circular object

Depth: how thick an object is

This shows

This shows how thick the mattress is, so they are measuring the…..

Measuring across a circular shape is measuring the …….